USB Ethernet Adapter: Network driver power-state fault | Auckland
Pattern to record: Network works after restart but disappears after sleep or undocking.
Separate the adapter from the network
The adapter depends on two connections: USB to the computer and Ethernet to the switch. Note which one disappears during the fault and test the adapter directly before adding a hub or dock. One possible explanation is that the adapter does not resume correctly from a low-power state.
Link and configuration checks
- Compare USB ports, cable, network load and driver behaviour on another computer.
- Compare driver history, power settings and cold versus resumed operation.
Before internal work
Stop using an adapter that overheats or has a damaged cable. Disabling every power feature can reduce battery life without fixing firmware.
Verify the network path
If the checks support this cause, install the correct stable driver or firmware and adjust only supported power settings. Verification should cover supported link speed, sustained transfer, sleep, reconnect and another host.
For an assessment of your computer accessory, contact AEPC in Burswood or call 027 908 8880. Provide the model and the conditions that reproduce this problem. Workshop visits are by appointment.